Library of Congress, Gale Research Inc, Library of Congress. Cataloging Policy and Support Office, & Library of Congress. Subject Cataloging Division. (1993). Classification. Class C. Auxiliary sciences of history (4th ed.). The Library For sale by the Cataloging Distribution Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Library of Congress, Gale Research Inc, Library of Congress. Cataloging Policy and Support Office, και Library of Congress. Subject Cataloging Division. Classification. Class C. Auxiliary Sciences of History. 4th ed. Washington: The Library For sale by the Cataloging Distribution Service, 1993.
Παραπομπή σε μορφή MLA (9th εκδ.)Library of Congress, et al. Classification. Class C. Auxiliary Sciences of History. 4th ed. The Library For sale by the Cataloging Distribution Service, 1993.